Matlab Information
Matlab is by far the best environment for experimentation in
numerical computing. Although by itself it is not the most efficient
choice for large-scale computing, it can be used to call compiled
C and Fortran routines and experiment with the results. Matlab
is a product of The Mathworks
You can find many MATLAB tutorials in the Internet by Google.
Here is an outdated but still very useful
MATLAB Primer, Kermit Sigmon, 3rd ed.